man's man page seems to have a typo. Take a look at the "-C" option. It directs you to "(See man.conf(5).)". It should direct you to "(See
man.config(5).)". I also suggest changing "Specify the man.conf file ..." to "Specify the man.config file ..." for consistency.
This man page is part of man, and seems to be fixed in Red Hat Linux 7.